One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,5,7,8)(9,10,15,13)(11,12,16,14)(19,26)(20,28)(22,23)(24,29)(3,7)(5,8)(10,13)(11,16)(17,18,21,25)(19,23,26,22)(20,24,28,29)(27,31,32,30)(1,2)(3,5)(4,6)(7,8)(9,11)(10,14)(12,13)(15,16)(17,19,21,26)(18,22,25,23)(20,27,28,32)(24,30,29,31)(9,12,15,14)(10,11,13,16)(17,19)(18,23)(20,27)(21,26)(22,25)(24,31)(28,32)(29,30)(1,3)(2,5)(4,7)(6,8)(9,13,15,10)(11,12,16,14)(17,18)(19,22)(20,29)(21,25)(23,26)(24,28)(27,31)(30,32)(1,2)(3,5)(4,6)(7,8)(9,14,15,12)(10,16,13,11)(17,20)(18,24)(19,27)(21,28)(22,30)(23,31)(25,29)(26,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.